API 5L X80
TUSPIPE’s API 5L X80 is API standard certified, a high-grade line pipe that meets more demanding engineering requirements. TUSPIPE’s precision manufacturing ensures that each pipe meets stringent performance specifications, providing customers with greater reliability in large-scale oil and gas projects.
API 5L X80
API 5L X80 is a type of pipeline steel used in the transportation of petroleum, oil & gas. This type of pipe is mostly used to transfer fluids, including crude oil, natural gas, and petroleum products, from one site to another.
This sort of pipe is often constructed from high-strength steel, which enables it to survive the high pressures and temperatures that are common in these sectors. In addition, API 5L X80 line pipe is typically coated with a layer of corrosion-resistant material, such as FBE, 3LPE, or 3LPP, to protect it from the harsh environment in which it is used.
¿Por qué elegir tuspipe?
Desde 1998, Tianjin United Steel Piping Co., Ltd (TUSPIPE) se ha comprometido a suministrar tubos de línea de alta calidad.
Con más de 500.000 toneladas de capacidad de producción anual, la empresa presta servicio a diversos campos e industrias, como la explotación y transmisión de petróleo y gas, la construcción naval y de automóviles, el agua y la electricidad, la protección del medio ambiente, la ingeniería mecánica, la construcción de infraestructuras, etc.
TUSPIPE da mucha importancia a la calidad de los productos y a un riguroso control de calidad de los mismos. Para mantener la buena calidad de los productos, la empresa ha establecido un Centro de Pruebas e Inspección desde 2004. Con una serie de pruebas de última generación y equipos de inspección, el centro de pruebas e inspección es capaz de realizar las pruebas de tracción, pruebas hidráulicas, pruebas de impacto, DWTT, etc.
Application of API 5L X80 Line Pipe
API 5L X80 line pipe is a commonly used pipeline in the petroleum and oil and gas industries. The main advantage of using API 5L X80 materials is its high strength. This allows it to transport large volumes of petroleum and oil without fear of rupturing or leaking. Additionally, its resistance to corrosion means that it can be used in a wide range of environments without fear of degradation.
As a result, API 5L X80 pipe is an essential component of the petroleum and oil and gas industries, and its applications are varied and essential
Equivalent Steel Grade of X80 Material
| Grado de acero | Equivalent Grade |
| API 5L X80 PSL-1 | - |
| API 5L X80 PSL-2 | L555Q or X80Q |
| L555M or X80M |
Chemical Composition of API 5L X80 Pipe with t ≤ 0.984”
| Grado de acero | Mass fraction, % based on heat and product analyses | Carbono Equiv a | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | V | Nb | Ti | Otros | CE IIW | CE Pcm | |
| max b | max | max b | max | max | max | max | max | max | max | ||
| Tubos sin soldadura y soldados | |||||||||||
| X80Q | 0.18f | 0.45f | 1.90f | 0.025 | 0.015 | g | g | g | i,j | As agreed | |
| Tubos soldados | |||||||||||
| X80M | 0.12f | 0.45f | 1.85f | 0.025 | 0.015 | g | g | g | i,j | .043f | 0.25 |
a. SMLS t>0.787”, CE limits shall be as agreed. The CEIIW limits applied fi C > 0.12% and the CEPcm limits apply if C ≤ 0.12%,
b. For each reduction of 0.01% below the specified maximum for C, an increase of 0.05% above the specified maximum for Mn is permissible, up to a maximum of 1.65% for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; up to a maximum of 2.00% for grades ≥ L485 or X70, but ≤ L555 or X80; and up to a maximum of 2.20% for grades > L555 or X80.,
c. Salvo acuerdo en contrario Nb = V ≤ 0,06%,
d. Nb = V = Ti ≤ 0,15%,
e. Salvo acuerdo en contrario, Cu ≤ 0,50%; Ni ≤ 0,30% Cr ≤ 0,30% y Mo ≤ 0,15%,
f. Salvo acuerdo en contrario,
g. Salvo acuerdo en contrario, Nb + V + Ti ≤ 0,15%,
h. Salvo acuerdo en contrario, Cu ≤ 0,50% Ni ≤ 0,50% Cr ≤ 0,50% y MO ≤ 0,50%,
i. Salvo acuerdo en contrario, Cu ≤ 0,50% Ni ≤ 1,00% Cr ≤ 0,50% y MO ≤ 0,50%,
j. B ≤ 0,004%,
k. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.55% and MO ≤ 0.80%,
l. Para todas las calidades de tubos PSL 2, excepto las calidades con notas al pie j señaladas, se aplica lo siguiente. Salvo acuerdo en contrario, no se permite ninguna adición intencionada de B y el B residual ≤ 0,001%.
API 5L X80 Mechanical Properties
| Grado de la tubería | Propiedades de tracción - Cuerpo de tubo de SMLS y tubos soldados PSL 2 | Costura de tubería soldada | |||||
|---|---|---|---|---|---|---|---|
| límite elástico a | Resistencia a la tracción a | Ratio a,c | Alargamiento | Resistencia a la tracción d | |||
| Rt0,5 PSI Mín | Rm PSI Mín | R10,5IRm | (in 2in) Af % | Rm (psi) | |||
| Mínimo | Máximo | Mínimo | Máximo | Máximo | Mínimo | Mínimo | |
| X80Q，X80M | 80,.500 | 102,300 | 90,600 | 119,700 | 0.93 | f | 90,600 |
| a. For intermediate grade, refer to the full API 5L X80 specification. | |||||||
| b. for grades > X90 refer to the full API5L specification. | |||||||
| c. Este límite se aplica a las tartas con D> 12,750 pulg. | |||||||
| d. Para los grados intermedios, la resistencia a la tracción mínima especificada para el cordón de soldadura será el mismo valor que se determinó para el cuerpo del tubo utilizando el pie a. | |||||||
| e. para las tuberías que requieran ensayos longitudinales, el límite elástico máximo será ≤ 71.800 psi | |||||||
| f. El alargamiento mínimo especificado, Af, expresado en porcentaje y redondeado al porcentaje más próximo, se determinará utilizando la siguiente ecuación: | |||||||
 | |||||||
| Donde C es 1 940 para el cálculo con unidades Si y 625 000 para el cálculo con unidades USC. | |||||||
| Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as follows | |||||||
| - Para las probetas de sección circular, 130 mm2 (0,20 pulg2) para las probetas de 12,7 mm (0,500 pulg) y 8,9 mm (,350 pulg) de diámetro; y 65 mm2 (0,10 pulg2) para las probetas de 6,4 mm (0,250 pulg) de diámetro. | |||||||
| - Para las probetas de sección completa, la menor de a) 485 mm2 (0,75 pulg2) y b) el área de la sección transversal de la probeta, derivada utilizando el diámetro exterior especificado y el espesor de pared especificado de la tubería, redondeada a los 10 mm2 (0,10 pulg2) más próximos. | |||||||
| - Para las probetas en tiras, la menor de a) 485 mm2 (0,75 pulgadas2) y b) el área de la sección transversal de la probeta, obtenida utilizando la anchura especificada de la probeta y el espesor de pared especificado de la tubería, redondeada a los 10 mm2 (0,10 pulgadas2) más próximos. | |||||||
| U es la resistencia mínima a la tracción especificada, expresada en megapascales (libras por pulgada cuadrada). | |||||||
| g. Valores inferiores a R10,5IRm pueden ser especificados por acuerdo. | |||||||
| h. for grades > x90 refer to the full API5L specification. |
Dimensions and Sizes of API 5L X80
Before buying an API 5L X80 pipe, check its size and dimensions to meet required API 5L X80 standards. Refer to ISO 4200 and ASME B36.10M, which specify dimensions and masses. These standards offer size guides and wall thickness details. Verify compliance by consulting the tables in these standards to ensure the right diameter and correct wall thickness. Purchasing pipes outside these standards may cause installation or usage problems, underscoring the importance of knowing dimensions and tolerances before making a purchase.
| NPS | O. D. | W. T. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN | En pulgadas | mm | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | Sth | XS | XXS |
| 50 | 2″ | 60.3 | 1.65 | 2.77 | - | - | - | 3.91 | - | 5.54 | - | - | - | 8.74 | 3.91 | 5.54 | 11.07 |
| 65 | 2 1/2″ | 73 | 2.11 | 3.05 | - | - | - | 5.16 | - | 7.01 | - | - | - | 9.53 | 5.16 | 7.01 | 14.02 |
| 80 | 3″ | 88.9 | 2.11 | 3.05 | - | - | - | 5.49 | - | 7.62 | - | - | - | 11.13 | 5.49 | 7.52 | 15.24 |
| 90 | 3 1/2″ | 101.6 | 2.11 | 3.05 | - | - | - | 5.74 | - | 8.08 | - | - | - | - | 5.74 | 8.08 | - |
| 100 | 4″ | 114.3 | 2.11 | 3.05 | - | - | - | 6.02 | - | 8.58 | - | 11.13 | - | 13.49 | 6.02 | 8.56 | 17.12 |
| 125 | 5″ | 141.3 | 2.77 | 3.4 | - | - | - | 6.55 | - | 9.53 | - | 12.7 | - | 15.88 | 6.55 | 9.53 | 18.05 |
| 150 | 6″ | 168.3 | 2.77 | 3.4 | - | - | - | 7.11 | - | 10.97 | - | 14.27 | - | 18.26 | 7.11 | 10.97 | 21.95 |
| 200 | 8″ | 219.1 | 2.77 | 3.76 | - | 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.7 | 22.23 |
| 250 | 10″ | 273.1 | 3.4 | 4.19 | - | 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.7 | 25.4 |
| 300 | 12″ | 323.9 | 3.96 | 4.57 | - | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.53 | 12.7 | 25.4 |
| 350 | 14″ | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.7 | - |
| 400 | 16″ | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.7 | - |
| 450 | 18″ | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | - | - | - |
| 500 | 20″ | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | - | - | - |
| 550 | 22″ | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | - | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | - | - | - |
| 600 | 24″ | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | - | - | - |
API 5L X80 Pipe Tolerance
| Tolerancia O.D. | Tolerancia W.T. | ||
|---|---|---|---|
| X80 | |||
| D ＜ 60,3 mm | +0,41/-0,40 mm | D ＜ 73mm | +15%/-12.5% |
| D ≥ 60,3 m | +0,75/-0,40 mm | D ≥ 73mm | +15%/-12.5% |
Test and inspection of API 5L X80
- Prueba hidrostática
The hydrostatic test is a crucial step in API 5L line pipe production. It involves using water to check for leaks in the weld seam or pipe body. Water pressure is gradually increased until it reaches the specified value.
- Prueba de flexión
The bending test is a vital quality check in API 5L X80 line pipe production. It entails applying force to a steel pipe sample until it cracks, ensuring it won’t fracture under stress during service. Typically performed on welded samples, where failures are common, the test also assesses unwelded samples to verify material quality. Bend test results guide adjustments in the manufacturing process to meet required standards and produce a reliable final product.
- Prueba de aplanamiento
The flattening test is a crucial mechanical assessment in steel pipe manufacturing, ensuring the quality of the final product and preventing potential issues like cracks. By applying force to a pipe sample until it deforms, the test measures the amount of deformation, offering insights into the pipe’s strength and resistance to cracking.
- Prueba de impacto CVN
Companies producing API 5L X80 must undergo an impact test, evaluating the pipe body, weld seam, and heat-affected zone. This test ensures the line pipe’s ability to withstand abrupt changes in temperature and pressure without shattering. Failure in any of these areas results in non-certification and disallows sale. The impact test is one of several assessments a line pipe undergoes for API certification.
